共查询到19条相似文献,搜索用时 187 毫秒
1.
2.
3.
基于图像重构的玻璃缺陷检测技术研究 总被引:2,自引:1,他引:1
玻璃缺陷检测方法是影响玻璃缺陷检测系统性能的重要因素。本文给出了采用图像重构方法对玻璃缺陷进行检测的方案。通过逐行三值化处理、数据编码及缺陷图像重构,简化了图像构成的同时保留了缺陷的特征信息,使对玻璃缺陷识别更为高效。实验表明此算法可对出现位置无重叠行及有重叠行的缺陷进行重构,并且达到在线检测要求。 相似文献
4.
玻璃基板是显示器屏幕无法替代的材料,其缺陷检测显得尤为重要。文章就不同光源对基板玻璃缺陷的检测进行了论述,以期对生产和加工行业的玻璃基板缺陷检测有指导意义。 相似文献
5.
机器视觉技术在玻璃基板缺陷检测设备中的应用 总被引:1,自引:0,他引:1
简单介绍了机器视觉的基本概念及相关组成,分析了以机器视觉为理论基础的光学检测设备在玻璃基板缺陷检测中的应用。通过对玻璃基板常见缺陷的介绍,指出了相关检测设备在具体的缺陷检测中需要注意的事项。 相似文献
6.
7.
8.
9.
随着光伏组件应用场景的变化,组件表面的颜色一致性逐渐成为用户关注的重点之一。组件表面的颜色差异主要体现在光伏面板玻璃的表面色差,由于低色差(美学)镀膜玻璃本身具备低色差的特征,对于不明显的色差问题检测难度较大。针对低色差(美学)镀膜玻璃表面色差缺陷检测问题,模拟成品光伏组件的人工检测方法,通过对光伏组件表面缺陷检测方法进行匹配性改进、升级,再结合到美学镀膜玻璃表面色差缺陷的检测中,从而提升美学玻璃检测的高效性、准确性,降低低色差镀膜玻璃表面缺陷检测难度,有效剔除不良品,并通过检测到的色差问题及时调整镀膜工艺,提高产品质量。 相似文献
10.
11.
12.
玻璃的理论强度很高,但由于原料组成、熔化、成形和退火等各工艺过程的影响,玻璃的实际强度比理论值要低很多。采用表面化学增强技术,能够降低玻璃的表面缺陷,提升玻璃的力学强度、表面硬度、耐划伤等性能。玻璃表面化学增强技术有离子交换法、表面化学抛光、脱碱增强法、表面涂层增强、表面微晶化增强技术等方法,通过对上述方法的研究和对比分析,每种方法都有各自相应的特点和应用范围,这些方法拓宽了玻璃表面化学增强技术的研究和发展。 相似文献
13.
14.
15.
《Ceramics International》2016,42(5):5629-5634
Surface treatment of optical glass fibers is an effective method to clean the impurities and remove the damage layer, such as scratches caused by the cold processing. Optical losses at the fiber core/cladding interface can thereby be decreased. Using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM), we studied the surface composition and morphology of fluorophosphate (FP) glass after polishing and chemical etching. In addition, we investigated the etching mechanism and the optimal concentration of etching solution. Results show that the surface composition is very close to that of the bulk glass for some elements, and the root-mean-square (RMS) roughness is approximately 0.821 nm. A method including acid–alkali pretreatment and a second polishing step is a novel way to improve the smoothness of surface and to eliminate defects such as contaminants and scratches. 相似文献
16.
17.
18.
Surface plays an important role in the physical and chemical properties of oxide glasses and controls the interactions of these glasses with the environment, thus dominating properties such as the chemical durability and bioactivity. The surface atomic structures of a series of sodium borosilicate glasses were studied using classical molecular dynamics simulations with recently developed compositional dependent partial charge potentials. The surface structural features and defect speciation were characterized and compared with the bulk glasses with the same composition. Our simulation results show that the borosilicate glass surfaces have significantly different chemical compositions and structures as compared to the bulk. The glass surfaces are found to be sodium enriched and behave like borosilicate glasses with higher R (Na2O/B2O3) values. As a result of this composition and associated structure changes, the amount of fourfold boron decreases at the surface and the network connectivity on the surface decreases. In addition to composition variation and local structure environment change, defects such as two‐membered rings and three‐coordinated silicon were also observed on the surface. These unusual surface composition and structure features are expected to significantly impact the chemical and physical properties and the interactions with the environments of sodium borosilicate glasses. 相似文献
19.
石英玻璃相对于金属、晶体、陶瓷等大多数固体材料具有更小的机械振动能量损耗,是许多精密测量器件的首选材料。本文测试对比了四种类型(Ⅰ类、Ⅱ类、Ⅲ类和Ⅳ类)石英玻璃的振动能量损耗特性,从材料化学组分和结构缺陷方面分析了石英玻璃本征损耗的影响因素及作用机理。结果表明:Ⅰ类和Ⅱ类石英玻璃的本征损耗显著大于Ⅲ类和Ⅳ类石英玻璃,主要是由金属杂质含量高和气泡等级低造成的;羟基含量不是影响石英玻璃本征损耗的主要因素;表面损耗是石英玻璃器件振动能量损耗的主要来源之一,可以通过湿法刻蚀消除。 相似文献